<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>外部引用CSS样式文件</title>
    <link rel="stylesheet" href="css/mystyle.css">
</head>

<body>

    <a class="my" href="http://baidu.com" target="_blank">百度</a>


</body>

</html>